CN1297023C

CN1297023C - Plastic case dry cell without Hg Zn-Mn paperboard

Info

Publication number: CN1297023C
Application number: CN200310106639.XA
Authority: CN
Inventors: 丁钢夫
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-10-15
Filing date: 2003-10-15
Publication date: 2007-01-24
Anticipated expiration: 2023-10-15
Also published as: CN1591944A

Abstract

A plastic shell dry battery with a non-mercury zinc-manganese paperboard comprises a battery body, a positive electrode bar and a positive electrode cell which are arranged in the battery body, wherein the battery body is provided with a plastic pipe barrel, and a negative electrode iron bottom is embedded at the inner port part of an inner hole of the plastic pipe barrel; the zinc tube device is in contact with the cathode iron bottom in the inner hole of the plastic tube to form the cathode of the whole battery; the mercury-free positive battery cell is externally coated with a pulp paper with a mercury-free electrolyte layer, and the coated and molded positive battery cell is arranged in an inner hole of the plastic pipe barrel; the first insulating sheet is arranged in a negative iron bottom at the bottom of the battery; and a plastic sealing washer is arranged on the upper part of the positive electrode cell. The invention solves the problem puzzling the industry for a long time by skillful technical conception, and achieves the purposes of preventing the leakage of the battery, improving the energy supply efficiency of the battery, saving raw materials and reducing the product cost.

Description

Plastic case dry cell without Hg Zn-Mn paperboard

Technical Field

The invention relates to a zinc-manganese dry battery, in particular to a plastic-shell zinc-manganese dry battery which is particularly suitable for a zinc-manganese primary battery, namely an R-type zinc-manganese dry battery.

Background

The conventional batteries comprise a zinc-manganese primary battery and an alkaline zinc-manganese dry battery, and the alkaline zinc-manganese dry battery has long service life but high manufacturing cost due to the material and the structure, and cannot adapt to wider audience groups;

the zinc-manganese primary battery has low cost, short service life and no environmental protection. The zinc-manganese dry battery takes manganese dioxide (manganese powder for short) as a positive electrode and electrolytic zinc (zinc for short) as a negative electrode, and after the electrolyte is added, a battery core made of manganese powder is inserted into a breathable carbon rod to form a positive electrode terminal which is connected with the negative electrode to generate discharge. The known technology adopts a zinc barrel made of zinc sheets as a battery shell and a cathode raw material for discharging consumption, so that the consumption of zinc materials in a cathode body of the existing zinc-manganese dry battery is 10 times of the discharge requirement of anode manganese powder, namely, after the anode manganese powder of an R-type zinc-manganese dry battery is discharged and consumed, the cathode zinc barrel is in good condition and cannot damage an electric appliance, and therefore, people usually add mercury to prevent the zinc from rapidly participating in reaction and consumption.

The problems of the conventional zinc-manganese dry battery are mainly as follows: a leakage, which is an inevitable problem due to its construction; the environmental protection problem caused by mercury-containing batteries; the zinc sheet of the zinc-manganese battery is used as the battery shell and the cathode of the battery, so only part of zinc is consumed during discharging, and most of zinc is wasted along with the discarded battery; the four-phase power supply has low power supply efficiency, and a great deal of work is done in the industry in the aspects of preventing battery leakage, improving battery power supply efficiency, saving raw materials, reducing product cost and the like.

The disclosed chinese patent 87201379 plastic shell alkaline zinc-manganese dry cell is a new type of secondary cell, which changes the metal structure of the alkaline zinc-manganese cell. The battery solves the technical difficulties of sealing, air expansion, alkali climbing and the like of the battery from the structural shape and materials, solves the problem of use safety, and prolongs the service life of the battery.

The published Chinese patent 91102838.8 discloses a mercury-free zinc-manganese paperboard battery, which uses nontoxic and harmless bismuth trichloride to replace virulent mercuric chloride as a corrosion inhibitor of a battery zinc electrode, so that the electrical performance of the battery reaches the international standard. The invention relates to coating of bismuth trichloride added into coated paper, and the coated paper is used as a battery diaphragm and is placed between a battery anode and a zinc cathode.

The problems of the zinc-manganese prototype cell are not solved completely because the prior art is not suitable for the zinc-manganese prototype cell.

Disclosure of Invention

The problem to be solved by the present invention is to overcome the above-mentioned drawbacks of the prior art and to provide a mercury-free zinc-manganese dry battery with improved battery construction and housing material.

The invention mainly aims to provide a novel battery structure which fundamentally solves the problem of battery leakage; a second technical object of the present invention is to improve the cell construction so that the cell is free of mercury; the third technical purpose of the invention is to reduce zinc resource waste and improve energy supply efficiency of the battery.

The technical problem to be solved by the invention is realized by adopting the following technical scheme that the plastic-shell mercury-free zinc-manganese paperboard dry battery provided by the invention comprises a battery body, and a positive pole rod and a positive pole battery cell which are arranged in the battery body, wherein,

the battery body is provided with a plastic pipe barrel, and an inner hole for accommodating the positive electrode cell and an adjacent air cavity are arranged in the plastic pipe barrel;

the cathode iron bottom is embedded in the inner port part of the inner hole of the plastic pipe barrel;

the zinc cylinder is arranged in the inner hole of the plastic cylinder and is contacted with the iron bottom of the cathode to form the cathode of the whole battery;

the copper cover is assembled on the plastic pipe barrel, and the central part of the copper cover is provided with an outward-protruding cap body for accommodating the anode rod;

the positive pole bar is inserted in the central part of the battery body, one end of the positive pole bar is arranged at the cap body of the copper cover, and the other end of the positive pole bar is arranged at the umbilical part which is protruded inwards at the iron bottom of the negative pole;

the mercury-free positive electrode cell is coated with pulp paper with a mercury-free electrolyte layer, and the coated and molded positive electrode cell is arranged in an inner hole of the plastic pipe barrel;

the first insulating sheet is arranged in the cathode iron bottom at the bottom of the battery; and a plastic sealing washer is arranged on the upper part of the positive battery cell after penetrating through the positive rod and is adjacent to the air chamber.

The technical problem of the invention can be further solved by adopting the following technical scheme:

in the plastic-case mercury-free zinc-manganese paperboard dry battery, an inner spigot for mounting the negative iron bottom and an inner hole groove for clamping the negative iron bottom are reserved in the inner hole port of the plastic pipe barrel; the end edge of the air cavity of the plastic pipe barrel is provided with a sealing groove for mounting a copper cover with a cap; the outer circle area of the negative iron bottom is matched with the inner spigot of the plastic pipe barrel, a flange or a bulge which can be clamped in the inner hole groove is reserved on the negative iron bottom, and an inner-bulge umbilical part is arranged at the center of the negative iron bottom;

in the plastic-case mercury-free zinc-manganese paperboard dry battery, a cotton paper layer wrapping the positive electrode core is arranged between the positive electrode core and the coated paper;

in the plastic-case mercury-free zinc-manganese paperboard dry battery, the first water absorption pad is sandwiched between the bottom of the positive electrode cell and the first insulating sheet; a second water absorption pad is arranged between the upper part of the positive battery cell and the plastic sealing washer after penetrating through the positive rod;

a plastic film gasket and a paper gasket are also adjacently arranged between the upper part of the positive battery cell and the plastic sealing gasket;

in the plastic-case mercury-free zinc-manganese paperboard dry battery, the water absorption pad is cotton paper or water absorption foam plastic;

in the plastic-case mercury-free zinc-manganese paperboard dry battery, the plastic pipe barrel is made of engineering plastics or nylon or resin;

compared with the prior art, the invention has obvious advantages and beneficial effects.

According to the technical scheme, the invention has at least the following advantages under excellent structure configuration:

the shell of the prototype battery made of plastic is made of the material performance of the plastic, so that the battery forms a complete insulating main body, and the effects of preventing liquid leakage and short circuit are achieved; the plastic is used as the shell of the battery, so that the cost is reduced; the zinc material can be effectively utilized, and the waste of the zinc material is avoided.

The water absorption pad is arranged, so that air expansion and seepage generated in the discharging process of the battery can be effectively released and absorbed, and liquid leakage and short circuit are further prevented.

The shell of the prototype battery made of plastic does not need to be added with mercury, thus fundamentally solving the environmental protection problem caused by the mercury-containing battery;

in a word, the invention solves the problem puzzling the industry for a long time by ingenious technical conception, and achieves the purposes of preventing the leakage of the battery, improving the energy supply efficiency of the battery, saving raw materials and reducing the product cost.

The detailed description of the present invention is provided in the following detailed description of the preferred embodiments and the accompanying drawings.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

Detailed Description

The following detailed description is provided for the specific embodiments, structures, features and effects according to the present invention with reference to the accompanying drawings and preferred embodiments; for the purposes of simplicity and clarity, the following description of the known art is omitted where appropriate so as not to obscure the description of the present invention with unnecessary detail.

Referring to fig. 1, a plastic-case mercury-free zinc-manganese paperboard dry battery includes a battery body 1, a positive electrode bar 3 and a positive electrode cell 2 disposed in the battery body, wherein,

the battery body 1 takes an injection molding plastic pipe barrel 11 as a shell, an inner hole 112 for accommodating the positive electrode cell 2 and a hole with a diameter slightly smaller than the inner hole 112 are arranged in the plastic pipe barrel to form an air chamber 113, and the inner hole 112 is adjacent to the air chamber 113; an inner spigot 115 for mounting the cathode iron bottom 12 and an inner hole groove 114 for clamping the cathode iron bottom 12 are reserved at the inner end part of the inner hole of the plastic pipe barrel; the end edge of the air chamber of the plastic pipe barrel is provided with a sealing groove 116 for mounting the copper cover 13 with the cap;

the punch formed round cap shaped negative iron bottom 12 is inlaid in the inner port part of the inner hole 112 of the plastic pipe barrel, the outer circle area part 125 of the negative iron bottom is matched with the inner spigot 115 of the plastic pipe barrel, and a flange or a bulge 124 which can be clamped in the inner hole groove 114 is left on the negative iron bottom, so that the negative iron bottom and the plastic pipe barrel are hermetically and stably installed to form a sealed barrel-shaped battery shell; the center part of the negative iron bottom is provided with an inward protruding umbilical part 128;

a zinc cylinder 28 made of thin zinc sheets is rolled into a cylinder shape capable of coating the positive electrode cell 2 and is arranged in an inner hole 112 of the plastic tube, and the zinc cylinder is contacted with the negative electrode iron bottom 12 to form the negative electrode of the whole battery;

a copper cover 13 formed by punching is assembled on the plastic pipe barrel 11, sealed by assembling a positioning gasket and sealed by using an adhesive, and an outward-protruding cap body 131 for accommodating a positive pole is arranged at the center of the copper cover;

the positive electrode rod 3 is inserted in the center of the battery body, one end of the positive electrode rod is arranged at the cap body 131 of the copper cover, and the other end of the positive electrode rod is arranged at the umbilical part 128 protruding inwards from the iron bottom of the negative electrode;

the positive electrode core 2 is prepared by mixing the conventional raw materials such as acetylene black, electrolytic manganese powder and the like with mercury-free electric liquid to prepare paste, an electrode core blank is prepared by a mould, a layer of cotton paper is coated outside the positive electrode core, a layer of pulp paper with a mercury-free electric liquid layer is coated outside the cotton paper, the coated and molded positive electrode core 2 is arranged in an inner hole 112 of a plastic pipe barrel, and the position of the core is fixed by a position corrector;

the round plastic insulating sheet 4 is arranged in the cathode iron bottom at the bottom of the battery and is used as an insulating clapboard between the anode and the cathode of the battery;

a circular first water absorption pad 5 made of cotton paper or foamed plastic is clamped between the circular first plastic insulation sheet 4 and the positive electrode cell 2;

a second water absorption pad 5b and a plastic sealing washer 6 which penetrate through the positive rod 3 and are arranged on the upper part of the positive battery cell 2 and are adjacent to the air cavity 113 and absorb water vapor in sequence;

a plastic film gasket 6a and a paper gasket 5a can be adjacently arranged between the upper part of the positive battery cell and the plastic sealing washer 6;

the plastic pipe barrel can be made of engineering plastics or nylon or resin;

the absorbent pad can be made of cotton paper or foam plastic which has strong water absorption and air suction.

Because the plastics do not have mercury zinc manganese dry battery and possess heavy current discharge, consequently, after this battery produces electrochemical reaction, there are gas expansion and weeping, in order to prevent this internal gas expansion and weeping of appearance of battery, increase a bottom pad that absorbs water in the battery bucket, on the upper portion of electric core top paper packing ring, increase a gasket that absorbs water and breathe in, can be with the battery after electrochemical reaction, the residual liquid and the gas of production carry out the internal storage of body and alleviate, reduce pressure, the slow release of rethread ventilative carbon-point is gone out, can control the negative pole short circuit effectively.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and modifications made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a mould shell mercury-free zinc manganese cardboard dry battery, includes battery body (1), anodal stick (3) and anodal electric core (2) that set up in the battery body, its characterized in that:

the battery body (1) is provided with a plastic pipe barrel (11), and an inner hole (112) for accommodating the positive electrode cell (2) and an adjacent air cavity (113) are arranged in the plastic pipe barrel;

a cathode iron bottom (12) is embedded in the inner port part of the inner hole (112) of the plastic pipe barrel;

the zinc cylinder (28) is arranged in an inner hole (112) of the plastic pipe cylinder, and the zinc cylinder is contacted with the negative iron bottom (12) to form the negative pole of the whole battery;

a copper cover (13) is assembled on the plastic pipe barrel (11), and the central part of the copper cover is provided with an outward protruding cap body (131) for containing the positive pole;

the positive pole bar (3) is inserted in the center of the battery body, one end of the positive pole bar is arranged at the cap body (131) of the copper cover, and the other end of the positive pole bar is arranged at the umbilical part (128) which protrudes inwards from the iron bottom of the negative pole;

the mercury-free positive electrode battery cell (2) is coated with pulp paper (27) with a mercury-free electrolyte layer, and the coated and molded positive electrode battery cell is arranged in an inner hole (112) of the plastic pipe barrel;

the first insulating sheet (4) is arranged in the cathode iron bottom at the bottom of the battery;

and a plastic sealing gasket (6) is arranged on the upper part of the positive battery cell after penetrating through the positive rod and is adjacent to the air cavity.

2. The plastic case mercury-free zinc-manganese paperboard dry battery of claim 1, which is characterized in that: an inner spigot (115) for mounting the negative iron bottom (12) and an inner hole groove (114) for clamping the negative iron bottom (12) are reserved in the inner hole port of the plastic pipe barrel (11); a sealing groove (116) for mounting a copper cover (13) with a cap is arranged at the end edge of the air cavity of the plastic pipe barrel; the outer circle area (125) of the negative iron bottom is matched with the inner spigot (115) of the plastic pipe barrel, a flange or a protrusion (124) which can be clamped in the inner hole groove (114) is reserved on the negative iron bottom, and an inner protruding umbilical part (128) is arranged at the center of the negative iron bottom.

3. The plastic case mercury-free zinc-manganese paperboard dry battery of claim 1 or 2, characterized in that: a cotton paper layer (25) wrapping the positive battery cell is arranged between the positive battery cell and the pulp layer paper (27).

4. The plastic case mercury-free zinc-manganese paperboard dry battery of claim 3, characterized in that: a first water absorption pad (5) is arranged between the bottom of the positive battery cell and the first insulating sheet (4); a second water absorption pad (5 b) is arranged between the upper part of the positive electrode core and the plastic sealing washer (6) after passing through the positive electrode rod.

5. The plastic case mercury-free zinc-manganese paperboard dry battery of claim 4, which is characterized in that: the absorbent pad is tissue paper.

6. The plastic case mercury-free zinc-manganese paperboard dry battery of claim 4, which is characterized in that: the absorbent pad is made of absorbent foam.

7. The plastic case mercury-free zinc-manganese paperboard dry battery of claim 4, which is characterized in that: and a plastic film gasket (6 a) and a paper gasket (5 a) are also adjacently arranged between the upper part of the positive battery cell and the plastic sealing gasket (6).

8. The plastic case mercury-free zinc-manganese paperboard dry battery of claim 1, which is characterized in that: the plastic pipe barrel is made of engineering plastics.

9. The plastic case mercury-free zinc-manganese paperboard dry battery of claim 1, which is characterized in that: the plastic pipe barrel is made of nylon.

10. The plastic case mercury-free zinc-manganese paperboard dry battery of claim 1, which is characterized in that: the plastic tube is made of resin.